The product is a set of four vintage Diener Space Raiders erasers from the 1970s, featuring a spaceship design. These erasers are made of rubber and were manufactured in Japan. The brand, Deiner, is known for its high-quality products, but the lead grade of these erasers is unspecified. These collectible erasers are a unique addition to any vintage pen and writing instrument collection, showcasing retro design elements and nostalgia for a bygone era. Eraser show age and may need cleaning.